– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Fri 23 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Fri 23 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Very mild (max 12°C on Mon afternoon, min 6°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 27mm), heaviest during Wed morning. Mild temperatures (max 8°C on Mon night, min 3°C on Wed night). Wind will be generally light. | |||||||||||||||
Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | |  | | | |  | |  | | |  |  |  | | |
some clouds | light rain | light rain | light rain | light rain | light rain | some clouds | some clouds | some clouds | cloudy | light rain | light rain | mod. rain | mod. rain | rain shwrs | some clouds | |
Cloud base (m) | 2700 | 1650 | 2650 | 2150 | 2400 | 6050 | 2550 | 600 | 600 | 550 | 600 | 600 | 850 | |||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 0.1 | 3 | 4 | 0.4 | 0.1 | — | — | — | — | 0.2 | 0.4 | 10 | 10 | 0.4 | — |
max °C | 7 | 8 | 8 | 8 | 9 | 11 | 9 | 11 | 12 | 8 | 7 | 7 | 7 | 4 | 5 | 4 |
min °C | 6 | 6 | 6 | 7 | 9 | 11 | 8 | 8 | 10 | 6 | 6 | 7 | 4 | 4 | 5 | 3 |
chill °C | 6 | 6 | 5 | 6 | 8 | 11 | 8 | 8 | 10 | 6 | 6 | 6 | 2 | 2 | 3 | 1 |
Freezing level m | 1950 | 2000 | 1600 | 2250 | 2000 | 2150 | 2400 | 2350 | 2150 | 1750 | 1500 | 1550 | 1250 | 1200 | 1200 | 1400 |
 | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:46 | — | — | 7:47 | — | — |
 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:55 | — | — | 5:54 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 7mm), mostly falling on Sat night. Very mild (max 12°C on Mon afternoon, min 6°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 27mm), heaviest during Wed morning. Mild temperatures (max 8°C on Mon night, min 3°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | | ||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.